Answer:
when lit, the atoms of different chemical compounds inside the firework absorb energy, when the electrons fall back to lower energy levels, they give off colored light. Depending upon the chemical used, different colors are produced. neon lights or signs are glass tubes filled with neon gas. When the light is plugged in, the electrical energy causes the electrons of neon to jump to higher energy levels, when they go to lower levels, colored light is given off. The neat thing is that the neon never gets used up. The only thing that gets used up is the electricity. The electrons don't get destroyed and can be used over and over again jumping levels. Neon glows with an orange light, but you know that neon signs can be lots of different colors. The variations come when different gases other than neon are used such as argon, or krypton or when the tube is painted so that with the light produced it produces a certain color.
Explanation:
Answer:
A lava lamp consists of oil, and wax in a glass, and a heat source (a light bulb) placed underneath the glass. When the lamp is turned on the bulb gets hot.
Explanation:
The question is already answered.
A: carbon
b: nitrogen
type of bond: covalent bond
formula: a3b4
Answer: 
.
Explanation:
= Wavelength of radiation
E= energy
Using Rydberg's Equation:
Where,
= Wavelength of radiation = ?
= Rydberg's Constant
= Higher energy level = 4
= Lower energy level = 1
Z= atomic number = 1 (for hydrogen)
Putting the values, in above equation, we get
The relationship between wavelength and frequency of the wave follows the equation:
where,
= frequency of the wave = ?
c = speed of light = 
= wavelength of the wave = 
The frequency of the light emitted by a hydrogen atom during a transition of its electron from the n = 4 to the n = 1 principal energy level is .
